Spring compressing tool



April-5, 1932. o..c;. STARK SPRING COMPRESSING TOOL Filed Feb. 9, 1928 Patented .A'praS; 193 2 airsstars OI'TMAR G. STARK, F VSTII LOUIS, MISSOURI 7 srRrNe OOMPRESSING moon Application filed February 9, 1928. Serial No. 252,950.

- This invention relates to improvements in a spring compressing tool and has forits primary object thelpurpose of providing the tool with improved means for automat cally locking the jaws in compressing position.

Another object of the invention is in providing one of the jaws of the tool with improved adjusting means. 7

' A further object of the invention is to provide aspring compressing tool which is simple in its construction, eflicient in its use and can be quickly operated.

A still further object of the invention is in providing an improved spring holding locage which is used inconjunctxon with the spring compressing tool.

Other and further objects will appear in the specification and be specifically pointed out in the appended claims, reference being i had in the accompanying drawings, exemplitying the invention, and in which Figure 1 is a side elevation of this 1111.- proved spring compressing tool having a portion of the operating lever and the handle broken away.

Figure 2 is a side elevation similar to Fig. 1 but showing the tool in a compressing pos1- tion. V

Figure 3 is a plan View of Fig. 2 having a portion at one end of the tool broken away.

Figure 4 is a transverse vertical section taken approximately on the line IV-IV of Fig. 2.1

Figure 5 is a perspective view of the spring 39 holding cage.

Referring by numerals tothe accompanying drawings 1 designates a frame or supvided, with a right angular bent portion 4,

said portion forming a handle 5, and pivoted at 6 between the portions 4 is an approximate L shaped lever 7, said lever being mounted betweenthe portions 4: and having a hand engaging portion 8 formed at one end, the

opposite end of said lever being pivoted at 59 toalink10."

Formed on the upper edge of eachof the members 2 adjacent .one end is a series of teeth 11 andcooperable with said teeth is the transversely extending portion 12 of a pawl 13, said. pawl being borne by a jaw 14 which is mounted on the members 2.; The jaw 14 is. made of a single piece of sheet metal which is bended in a shape so as to underengage the members 2 at their under sides and to ex-: tend upwardly and over said members so as to provide a pair of spaced upwardly extending portions 15. The pawl 13 is provided. with a pintle 16on each side, each pintle being mounted in respective openings 17 formed 7 on each extending portion 15.v Formed in the. vertical edge 18 of each portion- 15 is a recess 19, said recesses being in horizontal alinement.

Slidable upon themembers 2 is a jaw 20,.

saidjaw having a pair of upwardly extend? 2 ing portions 21. andro'rmed'in the vertical" face or edge 2201? each portion 20 is a recess 23, said recesses 23 being in'horizontal alinement and pivoted at 24 to saidj aw is one end 1 of the'link 10 which is pivoted at 9 to the 1 lever 7. .1

In the operation of this improved spring compressing tool which is usedforfcompressing springs for mounting'them in their hold- 1 ing cages or retainers so that they can be prepared for mounting in operative positions in explosive engines and the like, the jaw20 is moved to the position shown in Fig. 1 and the spring A to be compressed is mounted on the'upper edges of the members 2, said members by reason of being spaced apart providing aseat on" which thespring will rest as shown in F 4. The hand engaging portion 8 of the lever 7 is engaged, U and swung towards the handle ito the posil tion shown in Fig. 2, this moving of the lever 7 forcing the link 10 and the jaw 20 for-. ward into engagement with one end ofthe spring A and the opposite end of the spring will be forced against the jaw leanclthe spring is compressed.between. the jaws as shown in Fig, 2. In the travelling-of the 2 link 10,:when the pivot '9 of the "link and? lever 7 is moved beyond a center line he:

"tween the pivots 6 and 2 ljsaid link and lever will provide a lock to the aw 20 in which the compressed energy in the spring cannot force the jaw 20 rearward. In this position of locking the link 10 is held in abutting position with the portion 25 of the jaw 20.

After the compressing of the spring as shown in Fig. 2, the arched portion 26 of the spring retaining cage B is engaged astride the jaw 14, and the horizontal portions 27 of said cage B are engaged over opposing sides of the compressed spring as shown in Figs. 2 and 3, said side portions 27 being moved apart by reason of the cage B being made of a resilient material. The transversely projecting portions 28 and 29 of the cage are then each introduced into respective re cesses23 and 19 and the inwardly inclining portions 30 and .31 which project upwardly and, downwardly. respectively will be moved towards the spring in a confining position thereto. The inward positioning of the portions 28 and 29 in respective recesses 23 and 19 placesthem in alinement with the ends of the spring as shown in Fig. 3 and while they are held in this position by the operator bringinginward pressure to bear against the side portions 27 of the cage B, the lever 7 of the. tool is manipulated to withdraw the jaw 20 from engagement with the spring A, thus releasing the spring, and the pressure thereof is received by the portions 28 and 29 of the; cage B and the cage is then removed from the tool bearing the spring A therewith. The spring while-being held by the cage can thenbe readily mounted in its seating positionadjacent to the valve or part with which it is to cooperate. After the spring is mounted andheld in its operating position, the cage is thentmanipulated by spreading theportions 27 thereofv so that the cage can be dismounted from the seated spring.

What I claim is:

1. A spring compressing tool having an adjustably held'jaw and a movable jaw, a support for said jaws having a portion formed {at right angles thereto forming a handle, an actuating lever pivoted to said support, and a link connected to said lever and said movable jaw, said movable jaw having a portion against which said link abuts for holding said jaw in locked position.

2. A spring compressing tool having an adjustably held jaw and a movable jaw, a support for said jaws, an actuating lever pivotedto said support, a link connected to said lever and said movable jaw, said movable jaw having a portion against which said link abuts for holding said link in locked position.

3. A spring compressing tool having an adjustably held jaw and a movable jaw hav-- ing an abutting portion, a support for said aws, an actuatinglever pivoted to said support, and a hnkconnected to said lever and tion of said movable jaw.

OTTMAR G. STARK. 

